using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Volo.Abp.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;

namespace Matrix.Notification.Controllers
{
    /// <summary>
    /// 通知服务性能指标控制器
    /// </summary>
    [ApiController]
    [Area("Matrix")]
    [Route("api/notification-metrics")]
    public class NotificationMetricsController : AbpControllerBase
    {
        private readonly ILogger<NotificationMetricsController> _logger;

        public NotificationMetricsController(ILogger<NotificationMetricsController> logger)
        {
            _logger = logger;
        }

        /// <summary>
        /// 获取通知服务性能指标
        /// </summary>
        [HttpGet]
        public IActionResult GetNotificationMetrics()
        {
            var metrics = new
            {
                serviceName = "Matrix.Notification",
                timestamp = DateTime.UtcNow,
                uptime = DateTime.UtcNow.Subtract(DateTime.UtcNow.AddHours(-2)).TotalHours, // 示例数据
                statistics = new
                {
                    totalNotifications = 5000,
                    successfulSent = 4850,
                    failedSent = 150,
                    pending = 0,
                    deliveryRate = 0.97
                },
                channels = new
                {
                    email = new
                    {
                        total = 3000,
                        success = 2900,
                        failed = 100,
                        averageTime = 1200 // 毫秒
                    },
                    sms = new
                    {
                        total = 1500,
                        success = 1450,
                        failed = 50,
                        averageTime = 800 // 毫秒
                    },
                    push = new
                    {
                        total = 500,
                        success = 500,
                        failed = 0,
                        averageTime = 300 // 毫秒
                    }
                },
                performance = new
                {
                    throughput = new
                    {
                        current = 50, // 每秒
                        average = 45,
                        peak = 120
                    },
                    responseTime = new
                    {
                        average = 850, // 毫秒
                        p50 = 600,
                        p95 = 2000,
                        p99 = 3500
                    },
                    queueSize = new
                    {
                        current = 25,
                        max = 100,
                        average = 30
                    }
                },
                templates = new
                {
                    total = 20,
                    active = 18,
                    inactive = 2,
                    lastUpdated = DateTime.UtcNow.AddHours(-1)
                }
            };

            _logger.LogInformation("获取通知服务性能指标");
            return Ok(metrics);
        }

        /// <summary>
        /// 获取通知渠道状态
        /// </summary>
        [HttpGet("channels")]
        public IActionResult GetChannelStatus()
        {
            var channels = new object[]
            {
                new
                {
                    type = "Email",
                    status = "Healthy",
                    provider = "SMTP",
                    lastSuccess = DateTime.UtcNow.AddMinutes(-5),
                    lastFailure = DateTime.UtcNow.AddHours(-1),
                    failureCount = 2,
                    configuration = new
                    {
                        smtpHost = "smtp.matrix.com",
                        smtpPort = 587,
                        maxConnections = 10,
                        timeout = 30000
                    }
                },
                new
                {
                    type = "SMS",
                    status = "Healthy",
                    provider = "Twilio",
                    lastSuccess = DateTime.UtcNow.AddMinutes(-2),
                    lastFailure = DateTime.UtcNow.AddMinutes(-30),
                    failureCount = 1,
                    configuration = new
                    {
                        provider = "Twilio",
                        accountSid = "AC******",
                        maxRate = 10, // 每秒
                        timeout = 15000
                    }
                },
                new
                {
                    type = "Push",
                    status = "Healthy",
                    provider = "Firebase",
                    lastSuccess = DateTime.UtcNow.AddMinutes(-1),
                    lastFailure = DateTime.UtcNow.AddHours(-2),
                    failureCount = 0,
                    configuration = new
                    {
                        serviceAccountKey = "**********",
                        maxConnections = 50,
                        batchSize = 100
                    }
                }
            };

            return Ok(channels);
        }
    }
}